Setts



No. soem.

s. e. REED.

STRAIGHTWAY 0R GATE VALVE.

(pplicaton filed Jan. 9, 18,97.) Y

` 3 Sheets-Sheet l.l

A(hl-0 Model.)

No. 606,8l2. Patented July 5,1898.

- s. G. REED.

STBAIGHTWAY 0R GATE-VALVE.

p p 1 c a t x 0 n 1 e J a 1 8 9 7 (No Model.) 3 Sheet'sfeeeeeee v No. 606,*8I2. l Patented lu`|y 5, |898. S. G. REED.

ST'RAIGHTWAY 0B GATE VALVE.

' (Application fixed Jah. s, 1897.) (No Model.)

3 Sheets-Sheet 3,

made withthe casing two lugs cc, upon op-lV the casing, the interior parts being in eleva- UNITED STA-TES KPATENT OEEICE.

SAMUEL GoRDoNEEED, oE CHELSEA,

lCROSBY STEAM SETTS. 1

MAssAormsE'rfrs-Assrenon To THE GAGE AND vVALVE COMPANY, OE BOSTON, MASSACHU- "STRAIGHTWAY oR'GATE-VALVE.

sPEeIEIcA'TIoN "forming part of Letters Patent No. ooeiauatedauly 5, ieee.

Application filed January 9, 1897.

To a/ZZ whom it metil/concern.-

Be it known that I, lSAMUEL GORDON REED, a citizen ofthe Unitedl States, residing at Chelsea, in the countyof Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Straightway or Gate Valves; and I dohereby declare the following to be a `full, clear, and eXact descrip-i tion Vof the invention, such as will enable: others skilled in the art to which it appertains to make and use the same.

This invention relates to an improvement` in straightway or gate valves, and has for its object the production of a valve composed of two parts and which is opened or closed by the partial rotation of these parts one upon another.

The invention consists in a valve-casing and a valve composed of two parts having spiral or cam-faced meeting edges, as will be set forth.

In the drawings, Figure 1 represents a vertical view of the device, a quarter being removed to lshow-the internal construction. Fig. 2 representsa longitudinal section. Fig. 3 represents a longitudinal vertical section of tion. Fig. tshows the valve, parts together or contracted. Fig. 5 shows them separated or expanded. Figs. 6 to 1l show modiications of the valve. Y

In the drawings the V*letter A represents a valve-casing of any suitable'pattern and having the bore o, and 'circumferential valveseats ct' a opposite one tothe other. Just within or between these valve-seats there are posite sides and ends of the casing, `the faces a3 of these lugs being in opposite directionsf Between the seats ct a is located the'valve B, which is discal or cylindrical in form. This valve B consists of the three partsy DE D'. The parts D' D being alike and complementary a description of one does for both. The part D has a flat based, having an in-. terior central boss df, in which is Na central' circular-cavity or seat d2. Rising from the base CZ on the same side as the boss d are two circular flanges d3 d3. These flanges together nearly make a complete circle, there being a Serial No. 618,634. (No model.)

space between their'ends. j The facescltcl4 of these flanges are parts of spirals or camshaped. In the faces d4 d4 are made pockets d5, in which arev placed rollers or balls d6. Projecting from the outside of the part D, about midway of one of the flanges cl3, is a lug 17, theselugs on the two parts D D being on opposite sides and having their faces d8 in opposite directions. i gether by inserting the trunnions e2 e2 in the seats d2 d2, the faces d4 d4 of the parts com- -ing together, the balls d6 bearing against the .opposing face. .casingA between the seats a et', the seats C19 dg of the valve registering with the seats a' a' ;and the lugs CF and a2 being in the same circle. The part E consists of main portion e, which may be angular and is made with a `bore c and trunnions e2, projecting in oppositedirections.

The valve is put to- The valve is placed in the Y The valve-stem F is put in place in the valve B. The stern passes through one of the openings which are formed by the spaces between the ends of the flanges d3 d3 and also passes through the bore e of the part and D arecaused to be turnedy upon each other, the faces d4 moving on eacli other and separating the parts D and D', the rolls d6 relieving the friction and 'producing ease of movement. This action of the parts D and D is induced by thelugs (Z7 and d2 contacting, which locks the parts D and D in opposite directions, and hence they move on each other, and so moving enlarge` the valve B and close the valveway, the seats b and d" coming together.

Figs.l 6to 11 representother forms of the valve D which may be used.

Fig. 6 `is. a longitudinal vertical section through 6 6 of Fig. 7. In'lig;` 6 may be seen the lugs cl2 of the valve b,resting upon the lugs a2 of the casing A, thus illustrating their relative position when in contact.

Fig. 8 shows in perspective one of the sec- IOO ilS

tions D. (Seen in plan view in Fig. 7.) The form for rotating the disks is that of a screwthread, as may be seen. Upon the inner side of the larger cylindrical part of the section D is a male thread d, and upon the outer side of the smaller cylindrical portion dw is a corresponding female thread. The part D corresponds, although opposite, to this, so that one screws into the other, thus, in eiect, uniting by a large screw the two sections. Now when the lugs d2 (seen in Figs. (5 and 7) come in contact with the lugs (t2 of the casing and cause the parts D D to rotate they expand or contract them by means of this screw-thread just in the saine way as is done by the cam-faces d, as seen in Fig. 3. In Fig. t is also another method of attaching the spindle to the valve so that the trunnion permits a screw-thread thereof to pass down through it instead of being turned upon a nut in the casing A.

Fig. .9 presents also another attachment of the spindle F to the trunnion connection E, it being an enlargementf, which slides into the corresponding opening in the trunnion. In this figure the sections D D' of the valve I3 are rotated by means of a wedge a, formed at the bottom of the casing A. In this case as the valve proceeds downward, due to the spindle, the parts D D come in contact with the sides of the wedge aAl and are spread apart, due to the rotating of the same.

Fig. 10 represents another method of uniting the parts D D of the valve B, in which there is a projection (tu, which fits into a cylindrical recess (i12. In this case the spindle F, with its circular enlargement f, is fitted into a stirrup or hollow projection at the top of the section D. In this ligure it will be observed that the cam-faces d" in Fig. 3 instead of being parallel with the seats di are transversely oblique thereto, as shown at C113. This way of shaping the cam-faces may be applied to the form shown in Fig. 3 as well as that shown in Fig. l0. The purpose of this modiiication is to keep the seats d of the two sections D D in alinement or parallel to their axes when supported upon the parts du (l12 or the trunnion connection E. The loose connections here otherwise would permit of a sufficient movement as to allow of some distortion if not controlled by this form of cam-face. Besides in case the seats a a' of the casing A should not be in parallel vertical planes the oblique faces @Z13 of the sections D D of the valve e will permit these sections to open Variably, so that the seats d d will make a close contact with such seats a' a'.

Fig. 1l represents another modiiication, in which the spindle F has upon its lower end, passing through the trunnion connection, a wedge mounted thereon upon screw-threads which have a fixed relation to the screwthreads on the spindle F, which cause the valve B to rise or fall. The object of this is that when the valve is open to its highest point the wedge f is at its highest part on the screw-threads on which it travels. Then turning downward the spindle F the wedge f also moves downward relatively as fast as the screw-threads upon which it travels are relatively finer than the screw-threads upon the spindle, and so adjusted that when the valve B shall have come opposite to the seats a a of the casing A, or nearly so, the wedge f of the spindle shall have reached the sections D D of the valve B and caused thc same to separate and Iill the space between said seats c a.

Having thus described my invention, what I claim isl. A valve, consisting of the parts, D, E, D', in combination with the valve-stein, F, as set forth.

2. The valve consisting ot separable parts having meeting edges, such meeting edges being transversely oblique to the seating-faces of the valve en transverse radial lines, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL GORDON REED.

lVitnesses:

J. II. MILLETT, A. I.. BowKEI-i. 

